Sayyiduna Abu al-Darda' (may Allah be pleased with him) narrates: My beloved friend (peace and blessings be upon him) counselled me to look at the one who is below me and not to look at the one who is above me; to love the poor and stay close to them; to maintain ties of kinship even if they wrong me and treat me harshly; to speak according to the command of Allah Almighty; not to fear the blame of any blamer in the matter of Allah Almighty; not to ask anyone for anything; and to say abundantly 'La hawla wa la quwwata illa billah' (There is no power and no strength except with Allah), for it is one of the treasures of Paradise.
Al-Tabarani recorded it; its chain contains Abu al-Judi, whom I do not know, and the rest of its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الوصايا / 7116