The istikhara dua

Allāhumma innī astakhīruka bi-ʿilmik, wa astaqdiruka bi-qudratik, wa asʾaluka min faḍlika l-ʿaẓīm. fa-innaka taqdiru wa lā aqdir, wa taʿlamu wa lā aʿlam, wa anta ʿallāmu l-ghuyūb. Allāhumma in kunta taʿlamu anna hādha l-amra [then mention the thing to be decided] khayrun lī fī dīnī wa maʿāshī wa ʿāqibati amrī [or say: ʿājilihi wa ājilihi], fa-qdurhu-lī, wa yassirhu-lī, thumma bārik-lī fīh. wa in kunta taʿlamu anna hādha l-amra sharrun lī fī dīnī wa maʿāshī wa ʿāqibati amrī [or say: ʿājilihi wa ājilihi], faṣrifhu ʿannī, wa ṣrifnī ʿanh, wa qdur-liya l-khayra ḥaythu kān, thumma arḍinī bihAllahumma inni astakhiruka bi-‘ilmik, wa astaqdiruka bi-qudratik, wa as’aluka min fadlika l-‘azim. fa-innaka taqdiru wa la aqdir, wa ta‘lamu wa la a‘lam, wa anta ‘allamu l-ghuyub. Allahumma in kunta ta‘lamu anna hadha l-amra [then mention the thing to be decided] khayrun li fi dini wa ma‘ashi wa ‘aqibati amri [or say: ‘ajilihi wa ajilihi], fa-qdurhu-li, wa yassirhu-li, thumma barik-li fih. wa in kunta ta‘lamu anna hadha l-amra sharrun li fi dini wa ma‘ashi wa ‘aqibati amri [or say: ‘ajilihi wa ajilihi], fasrifhu ‘anni, wa srifni ‘anh, wa qdur-liya l-khayra haythu kan, thumma ardini bih

(On the authority of Jabir Ibn ʿAbdullah , he said: ’The Prophet would instruct us to pray for guidance in all of our concerns, just as he would teach us a chapter from the Quran. He would say ’ If any of you intends to undertake a matter then let him pray two supererogatory units (two rakʿah nafilah) of prayer and after which he should supplicate:‘O Allah, I seek Your counsel by Your knowledge and by Your power I seek strength and I ask You from Your immense favour, for verily You are able while I am not and verily You know while I do not and You are the Knower of the unseen. O Allah, if You know this affair -and here he mentions his need- to be good for me in relation to my religion, my life, and end, then decree and facilitate it for me, and bless me with it, and if You know this affair to be ill for me towards my religion, my life, and end, then remove it from me and remove me from it, and decree for me what is good wherever it be and make me satisfied with such.)(One who seeks guidance from his Creator and consults his fellow believers and then remains firm in his resolve does not regret, for Allah has said:…and consult them in the affair. Then when you have taken a decision, put your trust in Allah…)