Now, in ancient times there lived a monk among the Buddha’s disciples. Once during a famine, as the Buddha did not have enough to eat, this monk sold his own kesa stole and donated the money to the Buddha. The Buddha was curious about the donation and thus asked the monk for details. The monk explained. The Buddha then declined to accept the offering by saying, “A Buddhist priest’s stole is the canonical robe in which various Buddhas in the past, present, and future lives gain emancipation. I do not think I can repay such a great favor which was gained by selling such a precious robe.” The monk then asked the Buddha what he should do with the money for the kesa stole he sold. The Buddha asked in return whether or not the monk had a mother. “Yes, I have,” answered the monk. The Buddha then told the monk that he should offer the money to his own mother. The monk then said to the Buddha, “The Buddha is the Most Venerable One in the triple world. You are the eyes of all living beings. You are able to repay the money of a great canonical robe that may cover all the worlds in the universe or a wide kesa stole that may spread over the great earth. On the contrary, my mother is as ignorant as cattle and more hopeless than a sheep. How will she be able to repay the indebtedness of offering a kesa stole?” In response, the Buddha carefully questioned the monk, “Who gave birth to you? Isn’t it your mother who gave birth to you? There is no doubt that she will be able to repay the indebtedness of this kesa stole.”

Toki-dono Gohenji, Response to Lord Toki, Writings of Nichiren Shōnin, Volume 6, Followers I, Pages 6-7

The Buddha Śākyamuni is the father of the world, but your mother is your mother. I will save this for Mother’s Day.