Is performing 'Umrah in Rajab part of the Sunnah?

The Shaykh : Does the Sunnah of performing 'Umrah in Rajab still exist?
The student: No.

The Shaykh : Yes?
The student: No.

The Shaykh : No, because the Prophet (peace and blessings be upon him) did not perform 'Umrah in Rajab, nor did he encourage his Ummah to perform 'Umrah in Rajab. He did not say, "Whoever performs 'Umrah in Rajab will receive such and such." He also did not perform 'Umrah in Rajab himself. For this reason, when 'Abdullah ibn 'Umar (may Allah be pleased with them both) reported that the Prophet (peace and blessings be upon him) performed 'Umrah in Rajab, 'A'ishah (may Allah be pleased with her) refuted him while he was present and said: He was present and remained silent. There is no doubt that the correct position is with 'A'ishah. Did the Messenger (peace and blessings be upon him) encourage the Ummah to perform 'Umrah in Rajab?
The student: No.

The Shaykh : Yes?
The student: No.

The Shaykh : Never. Look into the hadiths; he did not encourage it except in Ramadan. He encouraged 'Umrah in Ramadan and said: In some wordings, And he himself (may the prayers and peace of Allah be upon him) performed 'Umrah throughout his life only in the months of Hajj. Do you understand, my brothers?