Is the fast of one who finds dates in his mouth and saliva upon waking up from sleep at the time of the Fajr Iqama valid?

The fast is not broken by swallowing saliva mixed with the taste of dates if it was not done intentionally, whether it occurred during sleep or was preceded by it while awake. If the food is so little that it cannot be spit out, then the fast is not broken by it, as it is impossible to guard against it. And if one swallows something that breaks the fast while asleep, their fast is not invalidated due to lack of intent and knowledge.