(I wish) if people would reduce from third to fourth (part for making a will of their property), for Messenger of Allah ﷺ said: So far as the third (part) is concerned it is quite substantial. In the hadith transmitted on the authority of Waki (the words are)" large" or" much".
أَنَّ النَّاسَ غَضُّوا مِنَ الثُّلُثِ إِلَى الرُّبُعِ فَإِنَّ رَسُولَ اللَّهِ ﷺ قَالَ الثُّلُثُ وَالثُّلُثُ كَثِيرٌ وَفِي حَدِيثِ وَكِيعٍ كَبِيرٌ أَوْ كَثِيرٌ