من كان له ثلاث بنات. فضل تربية البنات في السنة النبوية

they would be a barrier from the Hellfire from him Meaning a protection from entering the Hellfire All of this is included in the generality of this Hadeeth
except that Meaning the reward for doing this for them or three sisters Meaning his sisters and is beneficent towards them Meaning in addition to taking care of them, is good to them while living with them

Prophets, may the Salat and Salam be upon them, had daughters! This situation enters under the umbrella of the virtue of one who takes care of an orphan.

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من أنجب ثلاث بنات يحجبه الله عن النار ويرافق النبي في الجنة.. بشرطين
However, there is tremendous reward in being good to them, from Allah the Mighty and Majestic
هل يوجد فضل لمن كان أول أولاده بنتا ؟
When al Imam Ahmad, may Allah have mercy upon him, was told that he was blessed with a daughter he said: "Prophets had daughters! and raises them with good mannerisms Meaning with the mannerisms of the Islamic Legislation, as well as educates them
فضل تربية البنات في السنة النبوية
As long as he is the one who is responsible for them, is beneficent towards them, raises them until they reach the age of marriage and gets them married, his reward with Allah the Mighty is Jannah! Meaning he will enter it with the foremost who enter it
At Tabarani added; and gets them married
] No one from my Ummah who takes care of three girls Meaning takes responsibility for all their needs, including feeding and clothing them Regarding sisters whose father has passed away, and their brother takes responsibility for them by supporting them and being good to them

The condition of beneficence is that it is in accordance to the Islamic legislation, not in what contradicts it.

من عال ثلاث بنات أو مثلهن من الأخوات
It appears that the reward mentioned is only attained if the person continues with this beneficence until the girls are no longer in need of him, due to marriage or otherwise
من ابتلاه الله بثلاث بنات.. 7 أسباب تجعلك تفرح بإنجاب الإناث
Because just as he protected them in the life of this world from the lowliness of asking others, and preserved their reputations by preventing them from being in need of others who may lure them into fornication
من كان له ثلاث بنات فصبر على لأوائهن
and whoever takes care of three daughters, or three sisters and raises them with good manerisms, is merciful towards them until Allah grants them independence, Allah would obligate the entrance to Jannah for him by al-Muhaddith stated in at-Taqreeb: Whoever takes care of three girls Meaning takes responsibility for them and for their provision
A man said: 'O Messenger of Allah; or two? In this Hadeeth is an emphasis of the rights of girls over boys due to their weakness in seeking a means of provision for themselves

This is whether they are daughters or sisters.

من عال ثلاث بنات أو مثلهن من الأخوات
states in after mentioning all these narations; These wordings are combined in the meaning of the word 'Ihsaan - beneficence' They would be a barrier from the hell fire for him Meaning his reward for this would be protection from the Hellfire, a barrier between him and it
فضل الإحسان إلى البنات
[Benefits related to the chain of narrotors and the Arabic language have been omitted
مات وترك ثلاث بنات وإخوة
and is beneficent to them Al-Manawi stated: By enjoining ties with them and visiting them after they get married