Narrated Abu Nadrah: Ilyas ibn Dighfal said: I saw Abu Nadrah kissing on the cheek of al-Hasan.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
Where there is no matter of doubt in expressing affection and love, it is permissible to kiss even the cheek of another person's child.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 5221