Narrated Jabir (RA) in a Hadith which he attributed to the Prophet (ﷺ) regarding a pregnant (woman) whose husband died:

"She has no maintenance rights." [al-Baihaqi reported it. Its narrators are reliable, but al-Baihaqi said, "The correct narration is that which is Mawquf (a saying of a Companion)"].

وَعَنْ جَابِرٍ ‏-يَرْفَعُهُ, فِي اَلْحَامِلِ اَلْمُتَوَفَّى عَنْهَا‏- قَالَ: { لَا نَفَقَةَ لَهَا } أَخْرَجَهُ اَلْبَيْهَقِيُّ, وَرِجَالُهُ ثِقَاتٌ, لَكِنْ قَالَ: اَلْمَحْفُوظُ وَقْفُهُ [1]‏ .‏