The Shaykh’s comment on the fact that when a person enters a gathering, he should first greet and then shake hands.

The Shaykh : The Sunnah is that when a person enters, he should greet.
The student: Peace be upon you.

The Shaykh : Well done, and this is what you did. But that is not the point here. Then he completes it—also—as you did with the handshake. But it is not part of the Sunnah that when one of those entering greets, and then when he comes to shake hands, he offers a separate greeting to each person he shakes hands with: "Peace be upon you, peace be upon you, peace be upon you." No, so it is sufficient.
The student : With the first greeting.

The Shaykh : The first one, and then the handshake follows if it is feasible, because sometimes there is a crowd, for example.
The student : It becomes difficult.

The Shaykh : Yes, he greets and sits wherever the gathering ends up placing him. But in a gathering like this, it is very easy for you to apply the second Sunnah, which is the handshake. But "peace be upon you, peace be upon you, peace be upon you"—this is not part of the Sunnah. It is clear.
The student: Yes.

The Shaykh : May Allah bless you. We opened with what is best, or with that which is best.
The student : Our gathering is good, if Allah wills.

The Shaykh : May Allah bless you.
The student : May Allah preserve you.

The Shaykh : Yes, Abu al-Abd, what is it?

The questioner : Excuse me, if this happens, is it obligatory to respond to it?

The Shaykh : No, it is not obligatory.