Istikhara — seeking Allah's choice

اللَّهُمَّ إِنِّي أَسْتَخِيرُكَ بِعِلْمِكَ وَأَسْتَقْدِرُكَ بِقُدْرَتِكَ...

Allahumma inni astakhiruka bi-'ilmika wa astaqdiruka bi-qudratika...

“O Allah, I seek Your choice by Your knowledge, and Your power by Your might... (the full istikhara dua, prayed after two rak'ahs when facing a decision)”

— Sahih al-Bukhari 1166