The Prophet ﷺ said that whenever a petitioner or someone in need came to him, he would say, "Intercede for him so you may be rewarded, and Allah will decree through the tongue of His Messenger whatever He wills."
عن النبي ﷺ أنه كان إذا أتاه السائل أو صاحب الحاجة قال: اشفعوا فلتؤجروا وليقض الله على لسان رسوله ما شاء.