Sunan an-Nasa'i 3579
سنن النسائي#3579SahihIt was narrated that Abu Dharr said:"The Messenger of Allah said: 'There is no Arabian horse but it is allowed to offer two supplications every Sahar (end of the night): O Allah, You have caused me to be owned by whoever You wanted among the sons of Adam, and you have made me belong to him. Make me the dearest of his family and wealth to him, or among the dearest of his family and wealth to him
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 28:19