A Sikh of Guru Amar Das ji named Bhai Sachan Sach was very devoted to the Guru. Outside of Goindwal there was a crazy woman who people thought was possessed by demons. Even though this woman had attacked Bhai Sachan Sach, the Guru told him, "Take my sandal, when she attacks you, simply touch her with it." Bhai Sachan Sach at first didn't want to, but he listened to his Guru.... then when he was in the jungle.... she attacked him....
Bibi Shanti was a devoted Sikh of Guru Hargobind ji. She taught her son, Pulla, that if he believed strongly, then surely the Guru would come and visit them. One glorious day Guru Hargobind and some Sikhs really did come and visit. Their humble prayers were answered. The Guru had them make langar and all the villagers experienced a miracle they wouldn't soon forget.
Once Guru Amar Das ji was in deep, deep meditation. His daughter, Bibi Bhani, saw that the platform he was on was going to break and he would be jolted awake when that happens. She put her hand in the way. Her hand got cut really bad. When Guru ji saw her pain and devotion he granted her a blessing. She asked that the Guruship always stay in her family line. The rest of the Gurus were descendants of Bibi Bhani and Guru Ram Das.
Mata Ganga who was the wife of Guru Arjan Dev Ji, could not have a baby, so she went to ask Bhai Budha for this blessing. After rejecting her once, Bhai Budha accepted her offering. As he ate he crushed an onion with his fist, he said, "Your son will be a master of heaven and earth. He will crush enemies like I crushed this onion."