The root ر ب ص (r-b-ṣ) in the Quran

لِّلَّذِينَ يُؤْلُونَ مِن نِّسَآئِهِمْ تَرَبُّصُ أَرْبَعَةِ أَشْهُرٍ فَإِن فَآءُو فَإِنَّ ٱللَّهَ غَفُورٌ رَّحِيمٌ ۝٢٢٦

For those who swear not to have sexual relations with their wives is a waiting time of four months, but if they return [to normal relations] - then indeed, Allāh is Forgiving and Merciful.

وَٱلْمُطَلَّقَٰتُ يَتَرَبَّصْنَ بِأَنفُسِهِنَّ ثَلَٰثَةَ قُرُوٓءٍ وَلَا يَحِلُّ لَهُنَّ أَن يَكْتُمْنَ مَا خَلَقَ ٱللَّهُ فِىٓ أَرْحَامِهِنَّ إِن كُنَّ يُؤْمِنَّ بِٱللَّهِ وَٱلْيَوْمِ ٱلْـَٔاخِرِ وَبُعُولَتُهُنَّ أَحَقُّ بِرَدِّهِنَّ فِى ذَٰلِكَ إِنْ أَرَادُوٓا۟ إِصْلَٰحًا وَلَهُنَّ مِثْلُ ٱلَّذِى عَلَيْهِنَّ بِٱلْمَعْرُوفِ وَلِلرِّجَالِ عَلَيْهِنَّ دَرَجَةٌ وَٱللَّهُ عَزِيزٌ حَكِيمٌ ۝٢٢٨

Divorced women remain in waiting [i.e., do not remarry] for three periods, and it is not lawful for them to conceal what Allāh has created in their wombs if they believe in Allāh and the Last Day. And their husbands have more right to take them back in this [period] if they want reconciliation. And due to them [i.e., the wives] is similar to what is expected of them, according to what is reasonable. But the men [i.e., husbands] have a degree over them [in responsibility and authority]. And Allāh is Exalted in Might and Wise.

وَٱلَّذِينَ يُتَوَفَّوْنَ مِنكُمْ وَيَذَرُونَ أَزْوَٰجًا يَتَرَبَّصْنَ بِأَنفُسِهِنَّ أَرْبَعَةَ أَشْهُرٍ وَعَشْرًا فَإِذَا بَلَغْنَ أَجَلَهُنَّ فَلَا جُنَاحَ عَلَيْكُمْ فِيمَا فَعَلْنَ فِىٓ أَنفُسِهِنَّ بِٱلْمَعْرُوفِ وَٱللَّهُ بِمَا تَعْمَلُونَ خَبِيرٌ ۝٢٣٤

And those who are taken in death among you and leave wives behind - they, [the wives, shall] wait four months and ten [days]. And when they have fulfilled their term, then there is no blame upon you for what they do with themselves in an acceptable manner. And Allāh is [fully] Aware of what you do.

ٱلَّذِينَ يَتَرَبَّصُونَ بِكُمْ فَإِن كَانَ لَكُمْ فَتْحٌ مِّنَ ٱللَّهِ قَالُوٓا۟ أَلَمْ نَكُن مَّعَكُمْ وَإِن كَانَ لِلْكَٰفِرِينَ نَصِيبٌ قَالُوٓا۟ أَلَمْ نَسْتَحْوِذْ عَلَيْكُمْ وَنَمْنَعْكُم مِّنَ ٱلْمُؤْمِنِينَ فَٱللَّهُ يَحْكُمُ بَيْنَكُمْ يَوْمَ ٱلْقِيَٰمَةِ وَلَن يَجْعَلَ ٱللَّهُ لِلْكَٰفِرِينَ عَلَى ٱلْمُؤْمِنِينَ سَبِيلًا ۝١٤١

Those who wait [and watch] you. Then if you gain a victory from Allāh, they say, "Were we not with you?" But if the disbelievers have a success, they say [to them], "Did we not gain the advantage over you, but we protected you from the believers?" Allāh will judge between [all of] you on the Day of Resurrection, and never will Allāh give the disbelievers over the believers a way [to overcome them].

قُلْ إِن كَانَ ءَابَآؤُكُمْ وَأَبْنَآؤُكُمْ وَإِخْوَٰنُكُمْ وَأَزْوَٰجُكُمْ وَعَشِيرَتُكُمْ وَأَمْوَٰلٌ ٱقْتَرَفْتُمُوهَا وَتِجَٰرَةٌ تَخْشَوْنَ كَسَادَهَا وَمَسَٰكِنُ تَرْضَوْنَهَآ أَحَبَّ إِلَيْكُم مِّنَ ٱللَّهِ وَرَسُولِهِۦ وَجِهَادٍ فِى سَبِيلِهِۦ فَتَرَبَّصُوا۟ حَتَّىٰ يَأْتِىَ ٱللَّهُ بِأَمْرِهِۦ وَٱللَّهُ لَا يَهْدِى ٱلْقَوْمَ ٱلْفَٰسِقِينَ ۝٢٤

Say, [O Muḥammad], "If your fathers, your sons, your brothers, your wives, your relatives, wealth which you have obtained, commerce wherein you fear decline, and dwellings with which you are pleased are more beloved to you than Allāh and His Messenger and jihād [i.e., striving] in His cause, then wait until Allāh executes His command. And Allāh does not guide the defiantly disobedient people."

قُلْ هَلْ تَرَبَّصُونَ بِنَآ إِلَّآ إِحْدَى ٱلْحُسْنَيَيْنِ وَنَحْنُ نَتَرَبَّصُ بِكُمْ أَن يُصِيبَكُمُ ٱللَّهُ بِعَذَابٍ مِّنْ عِندِهِۦٓ أَوْ بِأَيْدِينَا فَتَرَبَّصُوٓا۟ إِنَّا مَعَكُم مُّتَرَبِّصُونَ ۝٥٢

Say, "Do you await for us except one of the two best things [i.e., martyrdom or victory] while we await for you that Allāh will afflict you with punishment from Himself or at our hands? So wait; indeed we, along with you, are waiting."

وَمِنَ ٱلْأَعْرَابِ مَن يَتَّخِذُ مَا يُنفِقُ مَغْرَمًا وَيَتَرَبَّصُ بِكُمُ ٱلدَّوَآئِرَ عَلَيْهِمْ دَآئِرَةُ ٱلسَّوْءِ وَٱللَّهُ سَمِيعٌ عَلِيمٌ ۝٩٨

And among the bedouins are some who consider what they spend as a loss and await for you turns of misfortune. Upon them will be a misfortune of evil. And Allāh is Hearing and Knowing.

قُلْ كُلٌّ مُّتَرَبِّصٌ فَتَرَبَّصُوا۟ فَسَتَعْلَمُونَ مَنْ أَصْحَٰبُ ٱلصِّرَٰطِ ٱلسَّوِىِّ وَمَنِ ٱهْتَدَىٰ ۝١٣٥

Say, "Each [of us] is waiting; so wait. For you will know who are the companions of the sound path and who is guided."

إِنْ هُوَ إِلَّا رَجُلٌۢ بِهِۦ جِنَّةٌ فَتَرَبَّصُوا۟ بِهِۦ حَتَّىٰ حِينٍ ۝٢٥

He is not but a man possessed with madness, so wait concerning him for a time."

أَمْ يَقُولُونَ شَاعِرٌ نَّتَرَبَّصُ بِهِۦ رَيْبَ ٱلْمَنُونِ ۝٣٠

Or do they say [of you], "A poet for whom we await a misfortune of time"?

قُلْ تَرَبَّصُوا۟ فَإِنِّى مَعَكُم مِّنَ ٱلْمُتَرَبِّصِينَ ۝٣١

Say, "Wait, for indeed I am, with you, among the waiters."

يُنَادُونَهُمْ أَلَمْ نَكُن مَّعَكُمْ قَالُوا۟ بَلَىٰ وَلَٰكِنَّكُمْ فَتَنتُمْ أَنفُسَكُمْ وَتَرَبَّصْتُمْ وَٱرْتَبْتُمْ وَغَرَّتْكُمُ ٱلْأَمَانِىُّ حَتَّىٰ جَآءَ أَمْرُ ٱللَّهِ وَغَرَّكُم بِٱللَّهِ ٱلْغَرُورُ ۝١٤

They [i.e., the hypocrites] will call to them [i.e., the believers], "Were we not with you?" They will say, "Yes, but you afflicted yourselves and awaited [misfortune for us] and doubted, and wishful thinking deluded you until there came the command of Allāh. And the Deceiver [i.e., Satan] deceived you concerning Allāh.