He who ate seven dates (of the land situated) between these two lava plains in the morning, no poison will harm him until it is evening.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَنْ أَكَلَ سَبْعَ تَمَرَاتٍ مِمَّا بَيْنَ لاَبَتَيْهَا حِينَ يُصْبِحُ لَمْ يَضُرَّهُ سُمٌّ حَتَّى يُمْسِيَ  

He who ate seven 'ajwa' dates in the morning, poison and magic will not harm him on that day.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَنْ تَصَبَّحَ بِسَبْعِ تَمَرَاتٍ عَجْوَةً لَمْ يَضُرَّهُ ذَلِكَ الْيَوْمَ سُمٌّ وَلاَ سِحْرٌ  

This hadith has been reported on the authority of Ibn Hashim with the same chain of transmitters but with a slight variation of wording.  

عَنِ النَّبِيِّ ﷺ مِثْلَهُ وَلاَ يَقُولاَنِ سَمِعْتُ النَّبِيَّ ﷺ  

The 'ajwa' dates of 'Aliya' contain healing effects and these are antidote in the early morning.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنَّ فِي عَجْوَةِ الْعَالِيَةِ شِفَاءً أَوْ إِنَّهَا تِرْيَاقٌ أَوَّلَ الْبُكْرَةِ