When some people enter the Masjid (mosque) while the Imam is performing Ruku` (bowing), they call out to him, "Be patient, for Allah is with the patient."
Was this phrase mentioned in a Hadith? Is it Wajib (obligatory) to be said by those who want to catch the Rak`ah (unit of Prayer)? Please, advise. May Allah reward you with the best.
It is impermissible to utter such a phrase for that purpose, as it was neither mentioned in a Hadith nor reported from the Salaf (righteous predecessors) of the Ummah (community) according to our knowledge.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.