Can the founder of an endowment have the benefit of his endowment?

وَقَدِ اشْتَرَطَ عُمَرُ رَضِيَ اللَّهُ عَنْهُ لاَ جُنَاحَ عَلَى مَنْ وَلِيَهُ أَنْ يَأْكُلَ. وَقَدْ يَلِي الْوَاقِفُ وَغَيْرُهُ. وَكَذَلِكَ مَنْ جَعَلَ بَدَنَةً أَوْ شَيْئًا لِلَّهِ، فَلَهُ أَنْ يَنْتَفِعَ بِهَا كَمَا يَنْتَفِعُ غَيْرُهُ وَإِنْ لَمْ يَشْتَرِطْ.Umar رضي الله عنه stipulated that the administrator of an endowment could eat from the yield of the endowment. The founder of an endowment or somebody else may be the trustee of the endowment. Similarly, if one offers a Badana (i.e., camel for sacrifice) or something else in Allah’s Cause, he is allowed to benefit by it in the same way as others benefit by it even if he did not stipulate that.