Is the call to prayer (adhan) superior, or is seeking knowledge, in the event of a conflict between them, especially considering the responsibility of performing the adhan and opening and closing the mosque?

The call to prayer (adhan), mosque maintenance, and seeking Islamic knowledge are all great acts of devotion. Seeking knowledge can be an individual obligation (fard ayn), which is that knowledge by which one's belief is corrected and one's worship and transactions become sound. Neglecting this is impermissible. Among the knowledge that is an individual obligation are: the science of creed (aqidah) and monotheism (tawhid), and the rulings of prayer, fasting, zakat, and Hajj for those who intend to perform them, and the rulings of buying, selling, and marriage and divorce for those who engage in them. As for knowledge that is not an individual obligation, if it conflicts with the adhan and mosque maintenance, it is preferable to combine both good deeds. If combining is not possible, or if the mosque administration does not agree, then seeking knowledge that is not an individual obligation should be prioritized, because it is an honor and elevation in this world and the Hereafter, and those who diligently pursue it are few. Many imams have stated that the best deeds after the obligatory duties are seeking knowledge.