It is sufficient for
the Khatib to ask Allah to send them rain during the Khutbah of the Jumu`ah Prayer. He should not perform Salat-ul-Istisqa' after that because the Prophet (peace be upon him) asked Allah for rain during the Khutbah of the Jumu`ah Prayer and did not offer Salat-ul-Istisqa' after that. The same thing applies to Salat-ul-'Eid; it is enough for the Kahtib to ask Allah for rain in the Khutbah and he must not perform Salat-ul-Istisqa', neither before nor after that because that contradicts the guidance of the Prophet (peace be upon him).May Allah grant us success. May peace and blessings be upon out Prophet Muhammad, his family, and Companions!