Where should the Imam stand while leading the funeral prayer of a female or a male?

Sahih al-Bukhari · Book 23 · Hadith 1332

حَدَّثَنَا عِمْرَانُ بْنُ مَيْسَرَةَ، حَدَّثَنَا عَبْدُ الْوَارِثِ، حَدَّثَنَا حُسَيْنٌ، عَنِ ابْنِ بُرَيْدَةَ، حَدَّثَنَا سَمُرَةُ بْنُ جُنْدُبٍ ـ رضى الله عنه ـ قَالَ صَلَّيْتُ وَرَاءَ النَّبِيِّ صلى الله عليه وسلم عَلَى امْرَأَةٍ مَاتَتْ فِي نِفَاسِهَا فَقَامَ عَلَيْهَا وَسَطَهَا‏.‏

Narrated Samura bin Jundab: I offered the funeral prayer behind the Prophet (ﷺ) for a woman who had died during childbirth and he stood up by the middle of the coffin.