Which verse of the Holy Qur’an points to a prophet after the Holy Prophet Muhammad (saw)?

There are several. The clearest are the covenant God made with all the prophets, explicitly including the Holy Prophet Muhammad (saw), the verse on the ranks of those who obey him, and the opening of Surah Al-Jumu‘ah.

The Holy Qur’an addresses this subject in several places. The first verse above tells us that God took a covenant from all the prophets. If a messenger came after them who confirmed what they had brought, they were to believe in him and help him. Elsewhere the Holy Qur’an states plainly that this covenant was also taken from the Holy Prophet Muhammad (saw).

If no one at all were to be expected after him, there would be no point in taking this covenant from him as well. The condition stays the same. The one who comes does not oppose the teaching of his predecessor. He confirms and strengthens it. Such a person should not be rejected but supported.

The second verse names four ranks of God’s favour. They are the prophets, the truthful, the martyrs and the righteous. These ranks were known before the Holy Prophet (saw). Now they are promised to those who obey God and him. So even the highest rank remains open, but only through obedience to him.

The third verse comes at the opening of Surah Al-Jumu‘ah. First it describes how God raised the Holy Prophet (saw) among the Arabs. Then it speaks of other people who have not yet joined the first. The companions understood at once that a later age was meant, and they asked about it. The answer of the Holy Prophet (saw), given in the hadith above, shows that a man from another people would bring faith back in a distant time.