An ailing resident in a Manhattan cooperative building allegedly stabbed her home health aide in the abdomen during a dispute over an oxygen mask, according to sources.

The incident occurred on Saturday at approximately 12:30 p.m. at 210 East 73rd Street in the Upper East Side neighborhood. The 66-year-old resident reportedly attacked the unidentified 54-year-old female home health aide.

The victim was transported by ambulance to Weill Cornell hospital, where she was reported to be in stable condition. The alleged assailant was taken into custody, but had not been formally charged as of Sunday morning.

One resident of the building told The Post that they overheard the aide on the phone prior to the altercation. "I do everything for you, I do your laundry, I take care of you, I take care of every little thing," the resident recounted hearing the aide say into the phone.

Units in the cooperative building, located in a desirable Manhattan neighborhood, are valued at high prices, with one-bedroom apartments listed for as much as $700,000, according to real estate data.