اللَّهُمَّ إِنِّي أَسْأَلُكَ مِنْ فَضْلِكَ
Allahumma inni as’aluka min fadlik.
English meaning
O Allah, I ask You for Your bounty.
English meaning: editorial rendering
Sahih Muslim 713a ↗
Sahih · recorded in Sahih Muslim
A situational supplication, not a prescribed daily repetition count.
Context & reflection
The same narration gives this wording for leaving the mosque.