Shu’bi (may Allah have mercy on him) said: Sayyiduna ‘Umar, Sayyiduna ‘Abdullah, Sayyiduna ‘Ali, and Sayyiduna Zayd (may Allah be pleased with them) gave the ruling of wala’ (patronage) to the greater (heir).
Hadith Referenceسنن دارمي / من كتاب الفرائض / 3058