حِصْنُ الْمُسْلِمِ
Hisn al-Muslim 197
Fortress of the Muslim (Hisn al-Muslim)
Returning a supplication of forgiveness
وَلَكَ
Walaka And you. Reference: Ahmad 5/82, and An-Nasa'i in 'Amalul-Yawm wal-Laylah p. 218, with checking by Dr. Farooq Hamadah.
Hisn al-Muslim, 197