Regarding what is it better for

Q: During the blessed month of Ramadan, the Imam would conclude Tarawih (special supererogatory night Prayer in Ramadan) with one Rak`ah (unit of Prayer) as Witr. A Muslim neighbor of mine would perform Witr being led by the Imam and then add an extra Rak`ah making it an even Salah (prayer). On asking him about the reason, he told me that he performs Qiyam-ul-Layl (optional Prayer at night) at home. Please, inform us whether this practice of his is permissible bearing in mind that although the Imam would conclude Witr saying Taslim (salutation of peace ending the Prayer), my neighbor would continue without Taslim offering the extra Rak`ah.

A: If the case is that this neighbor of yours delays the performance of Witr to perform it at home at the end of his Qiyam-ul-Layl Salah, it is good of him to add an extra Rak`ah to the Witr he performs being led by the Imam making it an even Salah and later perform Witr at the end of his Qiyam-ul-Layl Salah. (Part No. 7; Page No. 208) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.