Leaving the masjid
On the way in you ask for mercy. On the way out, for provision.
ُلِ اللَّهُمَّ إِنِّي أَسْأَلُكَ مِنْ فَضْلِكَ
Allāhumma innī as'aluka min faḍlik.
“O Allah, I ask You of Your bounty.”
The full narration
Abu Usaid reported that the Messenger of Allah (ﷺ) said:When any one of you enters the mosque, he should say:" O Allah! open for me the doors of Thy mercy" ; and when he steps out he should say: 'O Allah! I beg of Thee Thy Grace." (Imam Muslim said: I heard Yahya saying: I transcribed this hadith from the compilation of Sulaiman b. Bilal)
Source
Ṣaḥīḥ Muslim · 1652
Ṣaḥīḥ
- Agreed upon as authentic (al-Bukhārī / Muslim)