It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Luqman (peace be upon him) said to his son: O my son, hold fast to the gatherings of the scholars, and listen to the words of the wise, for Allah revives the dead heart with the light of wisdom just as He revives the dead earth with heavy rain."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7779