If a newborn cries, he is an heir
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا الرَّبِيعُ بْنُ بَدْرٍ، حَدَّثَنَا أَبُو الزُّبَيْرِ، عَنْ جَابِرٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِذَا اسْتَهَلَّ الصَّبِيُّ صُلِّيَ عَلَيْهِ وَوَرِثَ " .
It was narrated from Jabir that the Messenger of Allah (ﷺ) said: “If the child has cired, the (funeral) prayer should be offered for him (if he dies) and he is an heir.”