Learn the authentic Istikhara dua from Sahih al-Bukhari 6382: full Arabic, transliteration, English meaning, word-by-word breakdown, and how to pray two rak‘ahs before a decision.
اللَّهُمَّ إِنِّي أَسْتَخِيرُكَ بِعِلْمِكَ، وَأَسْتَقْدِرُكَ بِقُدْرَتِكَ، وَأَسْأَلُكَ مِنْ فَضْلِكَ الْعَظِيمِ، فَإِنَّكَ تَقْدِرُ وَلاَ أَقْدِرُ، وَتَعْلَمُ وَلاَ أَعْلَمُ، وَأَنْتَ عَلاَّمُ الْغُيُوبِ، اللَّهُمَّ إِنْ كُنْتَ تَعْلَمُ أَنَّ هَذَا الأَمْرَ خَيْرٌ لِي فِي دِينِي وَمَعَاشِي وَعَاقِبَةِ أَمْرِي فَاقْدُرْهُ لِي وَيَسِّرْهُ لِي ثُمَّ بَارِكْ لِي فِيهِ، وَإِنْ كُنْتَ تَعْلَمُ أَنَّ هَذَا الأَمْرَ شَرٌّ لِي فِي دِينِي وَمَعَاشِي وَعَاقِبَةِ أَمْرِي فَاصْرِفْهُ عَنِّي وَاصْرِفْنِي عَنْهُ، وَاقْدُرْ لِيَ الْخَيْرَ حَيْثُ كَانَ ثُمَّ أَرْضِنِي بِهِ
Transliteration: Allāhumma innī astakhīruka bi-‘ilmik, wa astaqdiruka bi-qudratik, wa as’aluka min faḍlika-l-‘aẓīm, fa-innaka taqdiru wa lā aqdir, wa ta‘lamu wa lā a‘lam, wa Anta ‘allāmu-l-ghuyūb. Allāhumma in kunta ta‘lamu anna hādha-l-amra khayrun lī fī dīnī wa ma‘āshī wa ‘āqibati amrī faqdurhu lī wa yassirhu lī thumma bārik lī fīh. Wa in kunta ta‘lamu anna hādha-l-amra sharrun lī fī dīnī wa ma‘āshī wa ‘āqibati amrī faṣrifhu ‘annī waṣrifnī ‘anh, waqdur liya-l-khayra ḥaythu kān thumma arḍinī bih.
English translation: O Allah, I seek Your choice by Your knowledge, and I seek ability by Your power, and I ask You of Your immense bounty. You are able and I am not; You know and I do not; You are the Knower of the unseen. O Allah, if You know this matter is good for me in my religion, my livelihood, and the outcome of my affair, then decree it for me, make it easy, and bless it for me. And if You know this matter is bad for me in my religion, my livelihood, and the outcome of my affair, then turn it away from me and turn me away from it, decree good for me wherever it may be, and make me pleased with it.