question #2 Sahih al-Bukhari 6699, Book 83, Hadith 76 : How does the concept of paying debts relate to fulfilling religious obligations in Islam?

A man came to the Prophet (ﷺ) and said to him, “My sister vowed to perform the Hajj, but she died
(before fulfilling it).” The Prophet (ﷺ) said, “Would you not have paid her debts if she had any?” The man
said, “Yes.” The Prophet (ﷺ) said, “So pay Allah’s Rights, as He is more entitled to receive His rights.”