Not graded
Al-Adab al-Mufrad 479
حَدَّثَنَا أَبُو الْوَلِيدِ، قَالَ: حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ هِشَامِ بْنِ زَيْدِ بْنِ أَنَسِ بْنِ مَالِكٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ: إِنْ قَامَتِ السَّاعَةُ وَفِي يَدِ أَحَدِكُمْ فَسِيلَةٌ، فَإِنِ اسْتَطَاعَ أَنْ لاَ تَقُومَ حَتَّى يَغْرِسَهَا فَلْيَغْرِسْهَا.
Anas ibn Malik reported that the Prophet, may Allah bless him and grant him peace, said, "If the Final Hour comes while you have a shoot of a plant in your hands and it is possible to plant it before the Hour comes, you should plant it."
Cited in Al-Adab al-Mufrad (No. 479).