Shaykh Muḥammad Nāṣir al-Dīn al-Albānī said:
…[A]s time goes by and my life keeps getting longer, I keep increasing in the strength of my belief in Allāh the Most High and Great’s saying:
You have not been given of [Allāh’s] knowledge except a small amount. (Al‑Isrāʾ 85)
…and [in the belief] that the more a person increases in knowledge over time, the more aware he becomes of his [own] ignorance.
And because of that it was from Allāh’s commands to His prophet ﷺ that He said to him, teaching us [as well]:
And say, my Lord increase me in knowledge. (Ṭā Hā 114)
And for that reason, it was from his ﷺ supplications [to ask]:
اللَّهُمَّ انْفَعْنِي بِمَا عَلَّمْتَنِي، وَعَلِّمْنِي مَا يَنْفَعُنِي، وَزِدْنِي عِلْماً
O Allāh, grant me benefit out that which You have taught me, teach me that which will be of benefit to me, and increase me in knowledge.
Graded Hasan by Al-Albānī (Al-Silsilah al-Ṣaḥīḥah, no. 3150)