The organisation attributed the attacks to enemies of the state.
He stated that the visit was to express solidarity with the Christian community.
They deliberated on the root causes of insecurity and the role of religious leadership in finding lasting solutions.
Mr Aliyu appealed to the Muslim community and the people of Kano State to refrain from any reprisal in the name of Allah.
Mr Aliyu also urged Muslims to intensify acts of worship in the last 10 days of Ramadan.
The Sultan said, “We must unite as Muslims under one umbrella. We may have our differences, how we see things and how we understand things.”
Nigerians make painful sacrifices to keep the nation moving, “but the leaders are perpetually living in affluence, to the detriment of the malnourished commoners.”
Mr Buhari is expected to hand over power to President-elect Bola Tinubu amid contentions and litigation on May 29.
“If we don’t humble ourselves to the Almighty Allah, an end to these orgy of violence seems not in sight.”
“We advise the governments to strategise and bring an end to orgies of killings happening in Nigeria; desperate situations need desperate measures.”
