The Messenger of Allah ﷺ said to me, "Say often, 'There is no power and no strength except with Allah,' for it is a treasure from the treasures of Paradise."Makhul said, "Whoever says, 'There is no power and no strength except with Allah, and there is no refuge from Allah except in Him,' Allah will remove from him seventy doors of harm, the least of which is poverty."
حدثنا أبو كريب حدثنا أبو خالد الأحمر عن هشام بن الغاز عن مكحول
قال لي رسول الله ﷺ أكثر من قول لا حول ولا قوة إلا بالله فإنها كنز من كنوز الجنة قال مكحول فمن قال لا حول ولا قوة إلا بالله ولا منجأ من الله إلا إليه كشف عنه سبعين بابا من الضر أدناهن الفقر
Sourcing, [Sahih] from the Messenger of Allah ﷺ. The hadith has many corroborating narrations in Ibn Hibban, no. 2338, and elsewhere, but without the statement of Makhul. Abu Khalid Ahmar used an'ana, so the chain of transmission to Makhul is daif.