The Peak of Eloquence · Hadith 2056 (#Passage #415)

٣٣٨. وَقَالَ (عليه السلام): الْعِلْمُ عِلْمَانِ: مَطْبُوعٌ وَمَسْمُوعٌ وَلَا يَنْفَعُ الْمَسْمُوعُ إِذَا لَمْ يَكُنِ الْمَطْبُوعُ.

338. Amīr al-mu’minīn, peace be upon him, said: Knowledge is of two kinds — that which is absorbed and that which is just heard. The one that is heard does not give benefit unless it is absorbed.

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).