Is there a specific supplication to practise so that a small child does not cry at night?

Summary

The fatwa states that no specific supplication for stopping a child from crying was found, but supplicating to Allah in general is permitted within the limits of Islamic law, with preference given to supplications from the Quran or hadith. The cause of the crying should be identified first, as the baby may be hungry, ill or disturbed by satan. Against satanic disturbance, it mentions reciting al-Fatihah, Ayat al-Kursi, and surahs al-Ikhlas, al-Falaq and al-Nas, as well as a ruqyah supplication three times. These recitations may be made over water which is then sprinkled on the sick person.

Written in our own words from the original fatwa — check the source before acting on it.