Is a husband's approaching his wife during the day in Ramadan, without ejaculation, considered among the errors that necessitate expiation, or does the Hadith "Indeed, Allah has pardoned for my nation their mistakes and forgetfulness" grant exemption from expiation?

Intercourse during the daytime in Ramadan (definition): Expiation is waived if one was forgetful, ignorant of its prohibition, or coerced. As for someone who knows the prohibition of intercourse and engages in it intentionally, he must make up the fast and offer expiation. Even if ejaculation does not occur, merely the intentional insertion of the glans necessitates the invalidation of the fast, expiation, and ghusl (definition).