رَبِّ ٱشْرَحْ لِى صَدْرِى ﴿٢٥﴾ وَيَسِّرْ لِىٓ أَمْرِى ﴿٢٦﴾ وَٱحْلُلْ عُقْدَةًۭ مِّن لِّسَانِى ﴿٢٧﴾ يَفْقَهُوا۟ قَوْلِى ﴿٢٨﴾

Transliteration: Rabbish-rah li sadri, wa yassir li amri, wahlul 'uqdatan min lisani, yafqahu qawli.

Translation: My Lord! relieve my mind, and ease my task for me; and loose a knot from my tongue, that they may understand my saying.

Source: Quran 20:25–28 (Surah Ta-Ha)

When to recite

Before an exam, interview, presentation or any difficult task — especially one involving speaking.

About this dua

The supplication of Prophet Musa when Allah commanded him to go to Pharaoh. Facing a daunting mission, he asked for an expanded chest (confidence and calm), an easier task and clear speech so that people would understand him.

Source and authenticity