"寝る子は育つ" meaning in Japanese

{
  "forms": [
    {
      "form": "寝る子は育つ",
      "ruby": [
        [
          "寝",
          "ね"
        ],
        [
          "子",
          "こ"
        ],
        [
          "育",
          "そだ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "neru ko wa sodatsu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "idiom",
        "2": "ねる こ は そだつ"
      },
      "expansion": "寝(ね)る子(こ)は育(そだ)つ • (neru ko wa sodatsu)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Children",
          "orig": "ja:Children",
          "parents": [
            "Youth",
            "Age",
            "People",
            "Human",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a well-slept child is a well-kept child"
      ],
      "id": "en-寝る子は育つ-ja-phrase-Eojk3Ddj",
      "links": [
        [
          "a well-slept child is a well-kept child",
          "a well-slept child is a well-kept child"
        ]
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "寝る子は育つ"
}

{
  "forms": [
    {
      "form": "寝る子は育つ",
      "ruby": [
        [
          "寝",
          "ね"
        ],
        [
          "子",
          "こ"
        ],
        [
          "育",
          "そだ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "neru ko wa sodatsu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "idiom",
        "2": "ねる こ は そだつ"
      },
      "expansion": "寝(ね)る子(こ)は育(そだ)つ • (neru ko wa sodatsu)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese idioms",
        "Japanese lemmas",
        "Japanese links with redundant wikilinks",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with three Han script characters",
        "ja:Children"
      ],
      "glosses": [
        "a well-slept child is a well-kept child"
      ],
      "links": [
        [
          "a well-slept child is a well-kept child",
          "a well-slept child is a well-kept child"
        ]
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "寝る子は育つ"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "寝る子は育つ"
  ],
  "section": "Japanese",
  "subsection": "idiom",
  "title": "寝る子は育つ",
  "trace": ""
}