At the end of its mountainous journey near Attock, the Indus River meets which river of Afghanistan?

Explanation

The Indus River comes out of the hills near Attock, where the Kabul River coming from Afghanistan joins it on the right bank. The Indus originates near Lake Manasarovar, close to Mount Kailash in Tibet, and flows through Tibet (China), India, and Pakistan finally falling into the Arabian Sea near Karachi.