In addition to the rigor in the yellow book, diving in the hut, Kyai Qosim trained to live a simple life. According to the story of Mr. Abd Qowi from the Pagedangan area, one night Kyai Qosim Bukhori invited himself to cook rice and he would find his side dishes. Mr. Abd Qowi asked, "Gus, what does this rice want to eat?" Then he replied, "For a moment, I'm back." Shortly thereafter he brought three strands of raw spinach and some lombok. "You know, Gus how is this?" asked pesantren alumni Raudlatul Ulum I who has now become a figure in his area. "That's it, we just eat with this," he replied calmly. 

After returning from Peterongan, Kyai Qosim before marriage is usually in Pesantren Raudlatul Ulum I. At the boarding school of his brother-in-law, KH. Yahya Syabrawi, Kyai Qosim is very firm in terms of regulations related to the issue of syar'i, such as the obligation of congregational prayer. 

According to KH. Romli, an alumnus of Pesantren Raudlatul Ulum I from Sumber Manjing, Kyai Qosim did not hesitate to throw bricks at a santri who was found not to participate in congregational prayers. On the door of room 1-A, the room he occupied was emblazoned with the inscription: Santri obligatory; 1) follow the congregational prayer,  2) Follow the deliberations.

Still according to the story of the caretaker of Pondok Pesantren Raudlatul Ulum Seddeng Bangkalan Madura, once Kyai Qosim Bukhori saw a santri cooking rice when it was mandatory hours of deliberation for all santri. Witnessing there was a santri who did not obey the rules of pesantren, without mincing words, Kyai Qosim kicked the kendil that was being burned, just the santri ran scared.