It is narrated from Hazrat Abu Ayyub Ansari (may Allah be pleased with him) that on the night of Mi'raj, when the Noble Prophet (peace and blessings be upon him) passed by Hazrat Ibrahim (peace be upon him), he asked Jibreel (peace be upon him), "Who is with you?" He replied, "This is Muhammad (peace and blessings be upon him)." Hazrat Ibrahim (peace be upon him) said to the Noble Prophet (peace and blessings be upon him), "Instruct your Ummah to plant abundantly the trees of Paradise, for the soil of Paradise is excellent and its land is spacious." The Noble Prophet (peace and blessings be upon him) asked, "What is meant by the trees of Paradise?" He replied, "To say: La hawla wa la quwwata illa billah."