Sayyidi wa sanadi Shaykh Moulana Mohammad Taqi Usmani (Allah SWT preserve him and allow us to benefit from him abundantly. Ameen!) said:

“After professing faith (emaan) the foremost duty and obligation that befalls an individual is to acquire religious knowledge. This is because until he knows what is required essentials (faraiz & wajibat)) to do and from what things to abstain from, he will not be able to fulfill the requirements of faith.”

Ina’mul Bari (duroos-e-Bukhari shareef) volume 2, page 27