手に入る how to know proper reading


I have noticed that 手に入る can be read in two ways: `te ni hairu` or `te ni iru`

[Jisho accepts only the first
option](https://jisho.org/search/%E6%89%8B%E3%81%AB%E5%85%A5%E3%82%8B)

But most (phonetic) keyboards allow to write it using the second form and I
have an impression that I have heard it somewhere in spoken language but
cannot recall proper reference.

Is the second one some kind of mistake? Or is it correct or is mainly in use
in other (I mean non-Tokyo) dialect?

If it is correct, how to know which form to use when reading written language?




Generally, 手に入る is read "te ni hairu". 入る was read いる in olden days, but is
generally read はいる now. The reading 手に入{い}る is not common. This is the first
time I have seen it. A reading 入{い}れる is common.

When 入る is a subsidiary verb like 消え入る, 寝入る and in a idiom like 飛んで火に入る夏の虫, it
is read いる.

There are words where 入る is read as both いる and はいる, like 入り口.

Source: <https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q103071965>




Generally, 手に入る is read "te ni hairu". 入る was read いる in olden days, but is
generally read はいる now. The reading 手に入{い}る is not common. This is the first
time I have seen it. A reading 入{い}れる is common.

When 入る is a subsidiary verb like 消え入る, 寝入る and in a idiom like 飛んで火に入る夏の虫, it
is read いる.

There are words where 入る is read as both いる and はいる, like 入り口.

Source: <https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q103071965>

