Can the one who is observing i’tikaaf give lessons and halaqahs?

Is it acceptable for the one who is observing i'tikaaf to teach
someone or give a lesson?.
Praise be to Allaah.
It is better for the one who is observing i'tikaaf to focus on worship
by himself such as dhikr, prayer, reading Qur'aan and so on. But if
there is aneed to teach someone orlearn, there is nothing wrong with
that, because it is also remembrance of Allaah (dhikr). End quote.
Shaykh Muhammad ibn 'Uthaymeen (may Allaah have mercy on him)
Risaalah Ahkaam al-Siyaam wa'l-I'tikaaf