Reference : Hisn al-Muslim 179

مَنْ أَطْعَمَهُ اللَّهُ الطَّعَامَ فَلْيَقُلْ:
"اللَّهُمَّ بَارِكْ لَنَا فِيهِ
وَأَطْعِمْنَا خَيْراً مِنْهُ"،
وَمَنْ سَقَاهُ اللَّهُ لَبَناً فَلْيَقُلْ
"اللَّهُمَّ بَارِكْ لَنَا فِيهِ
وَزِدْنَا مِنْهُ"
Whomever Allah has given food, should say:
Allāhumma bārik lanā fīhi,
wa aṭ`imnā khayran minh.

Whomever Allah has given milk to drink, should say :
Allāhumma bārik lanā fīhi,
wa zidnā minh.


Whomever Allah has given food, should say:

O Allah, bless us in it and provide us with better than it.

Whomever Allah has given milk to drink, should say :

O Allah, bless us in it and give us more of it.

Reference:
At-Tirmidhi 5/506. See also Al-Albani, Sahih At-Tirmidhi 3/158.

Chapter: Before eating